主题：再提一个问题：还是关于目录树的问题？

下列代码是指加载字符列的例子。如果把“雇员“字符列改成数值列，如何修改下列代码

Dim Filter As String
Dim dr As DataRow = e.Node.DataRow '获取生成此节点的行
If e.Node.Text <> "显示所有行" Then
    Select Case e.Node.Level
        Case 0
            Filter = "[产品] = '" & dr("产品") & "'"
        Case 1
            Filter = "[产品] = '" & dr("产品") & "' And [客户] = '" & dr("客户") & "'"
        Case 2
            Filter = "[产品] = '" & dr("产品") & "' And [客户] = '" & dr("客户") & "' And [雇员] = '" & dr("雇员") & "'"
    End Select
End If
Tables("订单").Filter = Filter

谢谢